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Molecular basis of unusual temperature sensitivity of tac promoter controlled heterologous genes expression in Escheria coli

Public support

  • Provider

    Academy of Sciences of the Czech Republic

  • Programme

    Grants of distinctly investigative character focused on the sphere of research pursued at present particularly in the Academy of Sciences of the Czech Republic

  • Call for proposals

  • Main participants

    Ústav molekulární genetiky AV ČR, v. v. i.

  • Contest type

  • Contract ID

Alternative language

  • Project name in Czech

    Molekulární podstata neobvyklé teplotní citlivosti exprese tac promotorem řízených cizích genů v Escherichia coli

  • Annotation in Czech

    tac promotor je silný, uměle zkonstruovaný hybridní promotor hojně používaný při expresi heterologních genů kodujících cizí proteiny v Escherichia coli. Naše dosavadní výsledky ukázaly, že geny pro retrovirové a jiné proteázy, jejichž exprese v E. coli je řízena tac promotorem, přestávají být exprimovány, je-li kultivační teplota snížena z 37 na 30 st. C. Naproti tomu zvýšení teploty na 40 st. C stimuluje preferenciální synthesu cizího proteinu natolik, že to způsobí prakticky zastavení růstu. Cílem navrhovaného projektu je poznat molekulární podstatu tohoto dosud nepopsaného jevu. Chceme zjistit, zda regulační efekt se uskutečňuje na úrovni transkripce nebo translace, jaká je role struktury promotoru, zda je tento jev vyhrazen jen tac promotoru, jakáje úloha ostatních částí expresního systému či je-li snad na příčině změna superhelicity plasmidové DNA vyvolaná změnou teploty.

Scientific branches

  • R&D category

  • CEP classification - main branch

    EE - Microbiology, virology

  • CEP - secondary branch

    EI - Biotechnology and bionics

  • CEP - another secondary branch

  • OECD FORD - equivalent branches <br>(according to the <a href="http://www.vyzkum.cz/storage/att/E6EF7938F0E854BAE520AC119FB22E8D/Prevodnik_oboru_Frascati.pdf">converter</a>)

    10606 - Microbiology<br>10607 - Virology<br>20801 - Environmental biotechnology<br>20802 - Bioremediation, diagnostic biotechnologies (DNA chips and biosensing devices) in environmental management<br>20803 - Environmental biotechnology related ethics<br>20901 - Industrial biotechnology<br>20902 - Bioprocessing technologies (industrial processes relying on biological agents to drive the process) biocatalysis, fermentation<br>20903 - Bioproducts (products that are manufactured using biological material as feedstock) biomaterials, bioplastics, biofuels, bioderived bulk and fine chemicals, bio-derived novel materials<br>30401 - Health-related biotechnology<br>30402 - Technologies involving the manipulation of cells, tissues, organs or the whole organism (assisted reproduction)<br>30403 - Technologies involving identifying the functioning of DNA, proteins and enzymes and how they influence the onset of disease and maintenance of well-being (gene-based diagnostics and therapeutic interventions [pharmacogenomics, gene-based therapeutics])<br>30404 - Biomaterials (as related to medical implants, devices, sensors)<br>30405 - Medical biotechnology related ethics<br>40401 - Agricultural biotechnology and food biotechnology<br>40402 - GM technology (crops and livestock), livestock cloning, marker assisted selection, diagnostics (DNA chips and biosensing devices for the early/accurate detection of diseases) biomass feedstock production technologies, biopharming<br>40403 - Agricultural biotechnology related ethics

Solution timeline

  • Realization period - beginning

    Jan 1, 1993

  • Realization period - end

    Jan 1, 1994

  • Project status

    U - Finished project

  • Latest support payment

Data delivery to CEP

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

  • Data delivery code

    CEP/1995/AV0/AV05IA/V/1:1

  • Data delivery date

Finance

  • Total approved costs

    0 thou. CZK

  • Public financial support

    0 thou. CZK

  • Other public sources

    0 thou. CZK

  • Non public and foreign sources

    0 thou. CZK